crystal microphone
Quick Summary
A crystal microphone is an electroacoustic device that converts acoustic power into electric power. It utilizes the piezoelectric effect, where certain crystals, like quartz, generate an electric charge when subjected to mechanical pressure. This pressure is applied by a diaphragm that vibrates in response to sound waves. The diaphragm's motion causes a corresponding change in the piezoelectric crystal, resulting in an electrical output that mirrors the original sound waves. This principle allows crystal microphones to be used in various applications, including hearing aids and sound recording systems.12
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…of a piezoelectric crystal (crystal microphone). In each case, motion of the diaphragm produces a variation in the electric output. By proper design, a microphone may be given directional characteristics so that it will pick up sound primarily from a single direction (unidirectional), from two directions (bidirectional), or more…
Read More…of a piezoelectric crystal (crystal microphone). In each case, motion of the diaphragm produces a variation in the electric output. By proper design, a microphone may be given directional characteristics so that it will pick up sound primarily from a single direction (unidirectional), from two directions (bidirectional), or more…
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electromechanical transducerTypes of transducersThe crystal microphone uses a piezoelectric crystal as its transducer. Piezoelectric crystals are durable and cheap, and they have relatively large electrical output; for this reason, they are often used in telephones and portable sound systems. They do not have very good linearity and so are…
Read MoreThe crystal microphone uses a piezoelectric crystal as its transducer. Piezoelectric crystals are durable and cheap, and they have relatively large electrical output; for this reason, they are often used in telephones and portable sound systems. They do not have very good linearity and so are…
Read More